In the big-bang theory, the primordial matter of the universe, originally conceived as composed of neutrons at high temperature and density.
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| 释义 | the world > matter > physics > atomic physics > particle physics > particle participating in strong interaction > baryon > [noun] > neutron > as primordial matter (1) ylem1948 In the big-bang theory, the primordial matter of the universe, originally conceived as composed of neutrons at high temperature and density. |
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